Use of UV light in ventilation systems

ICFO researchers bet on ultraviolet disinfection to inactivate Covid 19

Simple measures like hand washing, wearing masks, or other physical barriers may not be effective enough in shared interior spaces. A group of researchers from the Institute of Photonic Sciences propose the widespread use of UV-C light. They call it an affordable, short-term way to limit the spread of the SARS-COV-2 virus indoors. Is ultraviolet disinfection the solution for your space?

The application of UV-C light in the sterilization of spaces and objects is nothing new. Niels Ryberg Finsen received the Nobel Prize for Medicine in 1903 for having discovered the germicidal effect of ultraviolet light. Actually, ultraviolet disinfection C It is used in water disinfection and sterilization of hospital rooms. Just as its use has been shown to reduce the transmission of tuberculosis and other viruses by air.


One of the applications that can be given to the Ultraviolet Germicidal Irradiation (UVGI) is by means of building ventilation systems. The study published in ACS Publications, source of this article, exposes the real case that office workers frequently have unexplained symptoms related to their workspace. Through ultraviolet C disinfection use tests, results were shown for a 99% reduction in microbial concentrations on irradiated surfaces. The researchers interpret that installing UGVI in offices could resolve symptoms caused by microbial contamination of heating, ventilation, and air conditioning systems. 4 million employees would benefit from it.

Direct UV-C light exposure can cause eye damage when it exceeds the recommended limit. Just as it can cause carcinogenic effects on the skin because it is absorbed by human DNA. In the case of irradiation through ventilation ducts, UV light is not in direct contact with people, and there would be no such risk.


Taking into account the health risks of the direct UV-C irradiation On people, one of the easiest options to install and use is direct irradiation devices without the presence of people. The study, source of this article, explains that in spaces where there is a high turnover of people (such as toilets or elevators), they could protect themselves from contagion by exposing them safely to high intensity UV-C radiation. The application should be done as long as the spaces are not in use and programming the disinfection device according to the size of the room / room. Thus, a virus-free space is guaranteed.

UV-C lamp UVP-36 disinfects a space up to 20m².

This application would be equally valid for the public transport, with periodic irradiation cycles after a certain number of stops or time of continuous use. In the case of corridors or passageways for people, direct radiation devices that have an ultraviolet emission inactivation detector when they perceive movement could be successfully applied. Ultraviolet C disinfection devices will always be a complement to traditional cleaning.


The manufacturer Goldensea UV, A leader in the lighting sector, it has developed a complete range of UV-C disinfection devices. The ultraviolet light disinfection method C has positioned itself as one of the most reliable systems for all types of spaces, places and objects. Stonex, National distributor of Goldensea UV products, offers a complete training in the use of the devices to avoid risks and uses.

Banner disinfection UV-C Stonex solutions

SOURCE: Back to Normal: An Old Physics Route to Reduce SARS-CoV-2 Transmission in Indoor Spaces. Posted in ACS Publications.

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